﻿<p>The <em>IfcBSplineSurfaceForm</em> represents a part of a surface of some specific form.</p>
<blockquote class="extDef">NOTE&nbsp; Definition according to ISO/CD 10303-42:1992<br>
This type is used to indicate that the B-spline surface represents a part of a surface of some specific
form.</blockquote>
<blockquote class="note">NOTE&nbsp; Type adapted from <strong>b_spline_surface_form</strong> defined in ISO
10303-42.</blockquote>
<blockquote class="history">HISTORY&nbsp; New type in IFC4.</blockquote>